Thunderclap was in DC when they came. He knew he had a choice. Stand and fight against the Nazi invaders and lose to the overwhelming power of Master Man, or save as many people as possible. 

So he made the obvious choice and helped as many people hide as possible. He brought them to warehouses and he drew pursuers away, he got them into shipping containers on the railways, and in the bays. He moved by night when his black armor gave him a natural camouflage. And little by little he fought a gorilla war against the Nazis. He attacked patrols and he raided food trucks. He moved people out of DC as he was able, and brought food and water to those he couldn't move yet. He lost some, the people in the boats went first, trying to drive the boat got them all sunk. The railways went next, they were too easy to find. Those were Mile's fault, he made bad choices, and he couldn't save them all, but lord knows he tried. The sound of a nearby fight brought Thunderclap out in the day. Two supers were fighting, but he didn't know who was who just yet.

He stayed put, out of sight, as the living inferno let his rage spill over and onto the street and building around them. A yellow blur flashed all about, this way and that. Until finally a third combatant joined the melee.

Thunderclap continued to watch the action.